CN101507323B - Method for node B obtaining the channel quality information in TDD HSDPA system - Google Patents
Method for node B obtaining the channel quality information in TDD HSDPA system Download PDFInfo
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- CN101507323B CN101507323B CN2006800555899A CN200680055589A CN101507323B CN 101507323 B CN101507323 B CN 101507323B CN 2006800555899 A CN2006800555899 A CN 2006800555899A CN 200680055589 A CN200680055589 A CN 200680055589A CN 101507323 B CN101507323 B CN 101507323B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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Abstract
A method for a node B obtaining the channel quality information in a TDD HSDPA system includes: the radio network controller (RNC) sends a measurement control message to a user equipment (UE), requests the UE reporting the downlink received signal quality of the serving HS-DSCH cell; the UE reports the downlink channel quality information to the RNC via a measurement report message; the RNC forwards the downlink channel quality information to the node B via a HS-DSCH (high speed downlink shared channel) frame. With the invention, when the node B performs transmission to the UE on the HS-DSCH for the first time, or the time interval is too long, the modulation and coding mode could be selected based on current channel quality information.
Description
Technical field
The present invention relates to a kind of in wireless communication system the base station obtain the method for user terminal channel quality information, especially a kind of in TDD HSDPA (accesss of time division duplex high speed downlink packet) system the method for Node B (Node B) acquisition downlink channel quality information.
Background technology
In 3-G (Generation Three mobile communication system), the 3GPP of standardization body (third generation partner plan) is responsible to define the standard of WCDMA (Wideband Code Division Multiple Access (WCDMA)), WCDMA is divided into FDD (Frequency Division Duplexing (FDD)) and two kinds of patterns of TDD (time division duplex), and TDD is further divided into HCR (high spreading rate) and two kinds of options of LCR (low spreading rate) again.In 3GPP R5 Version Spec, introduced HSDPA (high speed downlink packet access), to strengthen the ability of downlink grouped data transmission.
HSDPA has adopted AMC (Adaptive Modulation and Coding) and HARQ (mixed automatic retransmission request) to increase data throughout.AMC provides rough data rate to select, with the slow fading of compensation wireless channel; HARQ provides accurate rate adaptation, with the rapid fading of compensation wireless channel.AMC is meant that modulation and encoding scheme are based on the adaptive change of channel condition.UE (subscriber equipment) feeds back to Node B according to the CQI (channel quality indication) of received signal estimation, and Node B is that HS-DSCH (high speed descending sharing channel) selects suitable modulation and encoding scheme to be used for downlink transfer then.
In distributing to the Radio Link of specifying UE, unique affiliated Radio Link of HS-PDSCH (high-speed physical downlink Dedicated Shared CHannel) of distributing to this UE is called service HS-DSCH Radio Link.With the sub-district that this service HS-DSCH Radio Link is associated, be called service HS-DSCH sub-district.The Node B of control service HS-DSCH sub-district is called service HS-DSCH Node B.
In FDD HSDPA system, UE measures the signal quality of down channel, and the HS-DPCCH (high speed uplink Dedicated Physical Control Channel) by up link gives Node B with the measurement result periodic report then.In TDD HSDPA system, the special physical controlling channel of upward that is not used in transmission CQI information such as (channel quality indications) is distributed to UE.When distributing HS-DSCH, distribute HS-SICH (high-speed shared information channel) automatically, with information such as transmission CQI.The report of CQI only generates when the transmission of response HS-DSCH.
Therefore, in TDD HSDPA system, HS-DSCH is at the transmission first of certain UE, and the selection of modulation and coding mode does not have current channel quality information to use.If HS-DSCH is at the transmission intercal overlong time of certain UE, the channel quality information that UE reported last time lost efficacy, and the selection of modulation and coding mode does not still have current channel quality information to use.
Summary of the invention
The technical problem to be solved in the present invention provides the method that Node B in a kind of TDD HSDPA system obtains channel quality information, make Node B in the first transmission of HS-DSCH at certain UE, perhaps under the situation of transmission intercal overlong time, the selection of modulation and coding mode can utilize current channel quality information.
According to the present invention, provide Node B in a kind of TDD HSDPA system to obtain the method for channel quality information, described method comprises: radio network controller (RNC) sends to subscriber equipment (UE) and measures control messages, and request UE reports the down receiving signal quality of service HS-DSCH (high speed descending sharing channel) sub-district; UE is by measurement report message, and the channel quality information of down link is reported RNC; And RNC is transmitted to Node B by the HS-DSCH frame with the channel quality information of down link.
Node B of the present invention obtains the method for channel quality information, do not need to revise the agreement of the interface Uu interface between UE and UTRAN (grounding wireless access network), the UE that meets 3GPP R5 version TDD standard can not make an amendment, be linked into the TDD HSDPA system that uses the method for the invention, make Node B realize obtaining the mechanism of current channel quality information.
According to following detailed of the present invention also in conjunction with the accompanying drawings, above-mentioned purpose, feature, aspect and the advantage with other of the present invention will become more obvious.
Description of drawings
Fig. 1 represents the UTRAN of WCDMA system structure;
Fig. 2 represents that the Node B of prior art obtains the method for channel quality information;
Fig. 3 represents that Node B of the present invention obtains the method for channel quality information.
Embodiment
At first, with reference to Fig. 1, Fig. 1 shows the UTRAN structure of WCDMA system.
The network element of WCDMA system is divided into UTRAN (grounding wireless access network) and CN (core net).Grounding wireless access network UTRAN is responsible for handling all functions relevant with radio communication, and core net CN is responsible for speech and data service exchanges and route querying, so that business is connected to external network.The WCDMA system also comprises the subscriber equipment (UE) that is connected with wave point with the user.UE links to each other by the Uu interface with UTRAN, and wherein, the UTRAN transmission signals is called down link for the Radio Link of UE, and the UE transmission signals is called up link for the Radio Link of UTRAN.UTRAN links to each other by the Iu interface with CN.
As shown in Figure 1, UTRAN comprises one or more RNS (RNS).Each RNS is a subnet in the UTRAN, and it comprises a RNC (radio network controller), one or more Node B.RNC is connected with each other by the Iur interface, and RNC links to each other by Iub interface with Node B.
The major function of Node B is to carry out air interface physical layer to handle, comprise chnnel coding and interweave, rate-matched, spread spectrum etc., it also carries out the operation of some basic RRMs, as, inner loop power control.Node B is the interim title that adopts in formulating standard procedure, and change is not used till today always.
RNC is a network element of being responsible for the UTRAN Radio Resource, and it links to each other with CN, and is responsible for stopping Radio Resource and controls (RRC) agreement, the RRC protocol definition message and the process between UE and the UTRAN.
The RNC of control Node B is called CRNC (control RNC).If UE will use the resource of a plurality of RNS to the connection of UTRAN, with regard to the connection between this UE and the UTRAN, the RNC that relates to has two independently logic functions so, i.e. SRNC (Serving RNC) and DRNC (Drift Radio Network Controller).SRNC (Serving RNC) be responsible for to stop transmitting user data and is connected from/the Iu that flows to RANAP (Radio Access Network application protocol) signaling of CN, also be responsible for to stop the radio resource control signaling between UE and the UTRAN, also be responsible for carrying out MAC (medium access control) layer and handle from/the data that flow to wave point.SRNC also carries out the operation of some basic RRMs, as, the RAB parameter is converted into air interface transport channel parameters, switch decision and exterior ring power control.DRNC (Drift Radio Network Controller) is other RNC except that SRNC, and they are controlling the sub-district that this UE uses.UE can not or have one, a plurality of DRNC.Actual RNC comprises the function of all CRNC, SRNC and DRNC usually.
Below, with reference to accompanying drawing 2, illustrate that the Node B of prior art obtains the process of channel quality information.
At first, UE goes up at HS-SCCH (High-Speed Shared Control Channel) and receives message, knows that the HS-DSCH that next time is associated transmits the resource of distributing to it.Then, UE demodulating and decoding HS-DSCH measures downlink channel quality simultaneously.Next, based on the quality information that obtains, the combination of the modulation format of the satisfied appointment of UE selection BLER (Block Error Rate) thresholding and the size of transmission block.Then, on the available HS-SICH of the next one, UE reports the modulation format of recommendation of up-to-date generation and the size of transmission block to Node B.
As mentioned above, there is such problem in the method that above-mentioned Node B obtains channel quality information, promptly in TDD HSDPA system, be not used in the special physical controlling channel of upward that transmits information such as CQI and distribute to UE, when distributing HS-DSCH, HS-SICH (high-speed shared information channel) is distributed automatically, with information such as transmission CQI, the report of CQI only generates when the transmission of response HS-DSCH, therefore, in the TDDHSDPA system, HS-DSCH is at the transmission first of certain UE, and the selection of modulation and coding mode does not have current channel quality information to use.And, if HS-DSCH at the transmission intercal overlong time of certain UE, the channel quality information that UE reported last time lost efficacy, the selection of modulation and coding mode does not still have current channel quality information to use.
Below, the process that obtains channel quality information according to Node B of the present invention is described with reference to Fig. 3.
At first, SRNC sends MEASUREMENT CONTROL (measuring control) message to UE, the received signal quality of indication UE period measurement service HS-DSCH sub-district.Received signal quality for example can be the RSCP (received signal code power) of P-CCPCH (Primary Common Control Physical Channel) and the ISCP of time slot (signal code power interference).After the received signal quality of UE measurement service HS-DSCH sub-district is finished, UE sends to SRNC by MEASUREMENT REPORT (measurement report) message with received signal quality, wherein the mode of the received signal quality of UE measurement service HS-DSCH sub-district is well known in the art, therefore, do not repeat them here.The mode that reports for example can be reported for periodic mode, also can report for the Event triggered mode.For example, the Event triggered mode report can for, only when the variation of received signal quality surpasses a certain threshold value, just report.After receiving MEASUREMENT REPORT message, SRNC is encapsulated in the received signal quality information that comprises in the MEASUREMENT REPORT message in the HS-DSCH frame, and does sign at the frame head of HS-DSCH frame, to be different from normal HS-DSCH Frame.After this, SRNC sends to Node B by the HS-DSCH frame that the Iub/Iur interface will comprise received signal quality information.After Node B receives the HS-DSCH frame,, judge that the HS-DSCH frame that receives is normal HS-DSCH Frame, still indicate the HS-DSCH frame of received signal quality information, for example judge that a certain position in this frame head is 1 or 0 according to the identification information of frame head.It will be appreciated by those skilled in the art that and to judge in various known modes, and be not limited to certain specific mode.If Node B judges that the HS-DSCH frame that receives is normal HS-DSCH Frame, what promptly carry in the HS-DSCH frame is data, then puts it into transmit queue; If it is the HS-DSCH frame of indication received signal quality information that Node B judges the HS-DSCH frame receive, what promptly carry in the HS-DSCH frame is the down receiving signal quality, and then control information offers scheduler (not shown) in the Node B as AMC with it.
Obtain the method for channel quality information according to Node B in the above-mentioned TDD HSDPA of the present invention system, make Node B in the first transmission of HS-DSCH at certain UE, perhaps under the situation of transmission intercal overlong time, the selection of modulation and coding mode can utilize current channel quality information.
Though detailed description of the present invention is at example embodiment, to those skilled in the art, various modification and the replacement form of these embodiment all can be imagined.Therefore, all modification and replacement forms in the clear and definite protection range of the present invention of claims have been contained in the present invention.
Claims (9)
1. a time division duplex high speed downlink packet inserts the method that Node B in the TDD HSDPA system obtains channel quality information, and described method comprises:
Radio network controller (RNC) sends to user equipment (UE) and measures control messages, and request UE reports the down receiving signal quality of service high-speed downlink shared channel HS-DSCH sub-district;
UE is by measurement report message, and the channel quality information of down link is reported RNC; And
RNC is encapsulated in the received signal quality information that comprises in the measurement report message in the HS-DSCH frame, by the HS-DSCH frame channel quality information of down link is transmitted to Node B.
2. according to the process of claim 1 wherein that the mode that reports is the periodic mode report.
3. according to the process of claim 1 wherein that the mode that reports reports for the Event triggered mode.
4. according to the method for claim 3, wherein the Event triggered mode only is reported as when the variation of received signal quality surpasses a certain threshold value, just reports.
5. according to the process of claim 1 wherein that received signal quality information is the received signal code power of Primary Common Control Physical Channel.
6. according to the process of claim 1 wherein that received signal quality information is the signal code power interference of time slot.
7. according to the method for claim 1, also comprise:
Frame head at the HS-DSCH frame that has encapsulated received signal quality information is done sign, to be different from normal HS-DSCH Frame.
8. according to the method for claim 7, also comprise:
After receiving the HS-DSCH frame, according to the identification information of frame head, Node B judges that the HS-DSCH frame that receives is normal HS-DSCH Frame, still indicates the HS-DSCH frame of received signal quality information.
9. method according to Claim 8 also comprises:
If Node B judges that the HS-DSCH frame that receives is normal HS-DSCH Frame, then put it into transmit queue, if and Node B judges that the HS-DSCH frame receive is the HS-DSCH frame of indication received signal quality information, then control information offers scheduler among the Node B as Adaptive Modulation and Coding AMC with it.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2006/002042 WO2008019534A1 (en) | 2006-08-11 | 2006-08-11 | Method for node b obtaining the channel quality information in tdd hsdpa system |
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| Publication Number | Publication Date |
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| CN101507323A CN101507323A (en) | 2009-08-12 |
| CN101507323B true CN101507323B (en) | 2010-11-17 |
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| CN2006800555899A Expired - Fee Related CN101507323B (en) | 2006-08-11 | 2006-08-11 | Method for node B obtaining the channel quality information in TDD HSDPA system |
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| WO (1) | WO2008019534A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101965004A (en) * | 2009-07-21 | 2011-02-02 | 中兴通讯股份有限公司 | Method and system for selecting user terminal home node |
| CN101990230A (en) * | 2009-07-30 | 2011-03-23 | 大唐移动通信设备有限公司 | Method and equipment for measuring wireless network communication system |
| CN102256355B (en) * | 2010-05-19 | 2013-12-25 | 鼎桥通信技术有限公司 | High speed-physical downlink shared channel (HS-PDSCH) transmission method and device in high speed downlink packet access (HSDPA) |
| WO2014116156A1 (en) * | 2013-01-28 | 2014-07-31 | Telefonaktiebolaget L M Ericsson (Publ) | Method for enabling interception, decoding and/or processing of a mac level message |
| CN107466065B (en) * | 2017-09-06 | 2019-12-06 | 中国移动通信集团江苏有限公司 | Method, device, equipment and medium for determining network quality |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466286A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Transmission method for high speed grouping busihess data based on TDD |
| CN1744750A (en) * | 2004-09-02 | 2006-03-08 | 上海贝尔阿尔卡特股份有限公司 | Channel quality interpotation method |
| CN1758813A (en) * | 2005-10-21 | 2006-04-12 | 中兴通讯股份有限公司 | Method for realizing multi-carrier high-speed down group access of time-division synchronus CDMAS system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030092894A (en) * | 2002-05-31 | 2003-12-06 | 삼성전자주식회사 | Apparatus for determining report period of channel quality in communication system using high speed data packet access scheme and method thereof |
| KR20040041289A (en) * | 2002-11-09 | 2004-05-17 | 삼성전자주식회사 | Apparatus and method for controlling transmission power serving multimedia broadcast/multicast service in mobile communication system |
-
2006
- 2006-08-11 CN CN2006800555899A patent/CN101507323B/en not_active Expired - Fee Related
- 2006-08-11 WO PCT/CN2006/002042 patent/WO2008019534A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466286A (en) * | 2002-06-06 | 2004-01-07 | 华为技术有限公司 | Transmission method for high speed grouping busihess data based on TDD |
| CN1744750A (en) * | 2004-09-02 | 2006-03-08 | 上海贝尔阿尔卡特股份有限公司 | Channel quality interpotation method |
| CN1758813A (en) * | 2005-10-21 | 2006-04-12 | 中兴通讯股份有限公司 | Method for realizing multi-carrier high-speed down group access of time-division synchronus CDMAS system |
Non-Patent Citations (1)
| Title |
|---|
| CN 1466286 A,全文. |
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| Publication number | Publication date |
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| CN101507323A (en) | 2009-08-12 |
| WO2008019534A1 (en) | 2008-02-21 |
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